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Abstract Detail


Evolutionary Developmental Biology (Evo-Devo)

Preston, Jill C. [1], Kost, Matthew [1], Hileman, Lena [2].

Determining the role of candidate TCP and MYB genes in Veronicaceae petal symmetry and stamen number evolution.

Bilaterally symmetrical flowers have evolved multiple times across angiosperms, and evolutionary transitions from radial to bilateral symmetry are considered to have enhanced the utilization of diverse and reliable pollinators through increased specialization. Multiple evolutionary shifts in stamen number have occurred in Veronicaceae (Lamiales), the lineage to which the model species, snapdragon (Antirrhinum majus), belongs. In the lineages Mohavea, Gratiola and Veronica, there have been independent reductions in stamen number from four to two. We have previously shown a correlation between expression of the dorsal flower identity gene CYCLOIDEA (CYC) and patterns of stamen abortion in Mohavea. Here we explore the role of CYC genes and their potential MYB gene targets in shaping petal symmetry and stamen number in other Veronicaceae lineages.


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1 - University of Kansas, Ecology and Evolutionary Biology, 2041 Haworth Hall, 1200 Sunnyside Avenue, Lawrence, Kansas, 66045, United States
2 - University of Kansas, Ecology and Evolutionary Biology, 1200 Sunnyside Ave., Lawrence, KS, 66045, USA

Keywords:
floral symmetry
cycloidea
radialis
Veronicaceae
stamen abortion.

Presentation Type: Oral Paper:Papers for Topics
Session: 53
Location: 101/Law
Date: Wednesday, July 30th, 2008
Time: 8:45 AM
Number: 53002
Abstract ID:110


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